The famous V8 juice is a mixture of tomatoes, and seven vegetables and fruits.The juice comprises primarily of tomato juice and is a trademark drink fro Campbell Soup Company.There are many variants of the V8 juice in the markets these days.The V8 juices provide you with lots of energy and that's why it a much preferred drink by many who take part in intense workouts. There are natural sugars and carbohydrates present will keep you energized all through your workout.V8 is also loaded with electrolytes that will replenish in your body as you sweat profusely during workouts and loose important nutrients like sodium, potassium, phosphorus. There is no harm in drinking V8 juice before workouts.